Several centuries have been taken toward the development of inventions made by different people into modern forms. Single inventors rarely bring out modern invention. What we have now as electronic devices (the computers) are inventions of several scientists, mathematicians and engineers from different centuries. For the purpose of this mini research key terms like evolution, technology and computer shall be considered, not forgetting to take a careful look at the evolution of these inventions from different centuries/years to our present generation starting from the earliest known device. The characteristics of these devices from generation to generation and their classification according to sizes, functions and uses shall also be discussed.
DEFINITION OF KEY TERMS
Evolution: Evolution is a gradual development that occurs in a particular place or
Technology: This is the use of mechanical arts and applied science. Technology
here refers to systems, methods of organization and techniques.
Computer: A computer is a programmable mechanical device that accepts
information or inputs, stores and manipulates data and brings out the result or output in numerical format.
COMPONENTS OF A COMPUTER SYSTEM
A general purpose computer has four major components namely: arithmetic and logic unit (ALU), control unit, memory and input/output devices. These parts are interconnected by buses often made of groups of wires.
ARITHMETIC AND LOGIC UNIT (ALU)
This unit carries out arithmetic and logic operations. According to Stokes (2007), the set of arithmetic operations that a particular arithmetic and logic unit supports may be limited to adding and subtracting or might include multiplying or dividing functions ( sine, cosine, etc) and square roots. While others represent real numbers with the use of floating point, some can only operate on whole numbers (integers) albeit, with limited precision. Arithmetic operation could be carried out... [continues]
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